*2014/03/13 13:41:41.17 *IOS HEADER VERSION 1.10 2011/10/26 2011/10/26 *FILE START TIME : GMT 1981/09/05 12:00:00.000 END TIME : GMT 1981/09/06 17:00:00.000 TIME INCREMENT : 0 1 0 0 0 ! (day hr min sec ms) NUMBER OF RECORDS : 30 DATA DESCRIPTION : CurrentMeter FILE TYPE : ASCII FORMAT : (f7.3,f8.2,f7.2) DATA TYPE : REAL*4 NUMBER OF CHANNELS : 3 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- -------------------- --------- -------------- -------------- 1 Speed m/s 0.52E-01 0.289 2 Direction:Geog(to) degrees 194.6 308.3 3 Temperature 'deg C' 0.7 1.05 $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ------ ----- ----- ------ ---- -------------- 1 99.999 ' ' 7 F ' ' 3 2 999.99 ' ' 8 F ' ' 2 3 99.99 ' ' 7 F ' ' 2 $END $REMARKS Original file name: $END *ADMINISTRATION AGENCY : CANMAR PROJECT : Beaufort Sea Drilling 1981 *LOCATION GEOGRAPHIC AREA : Beaufort Sea STATION : Kenalooak LATITUDE : 70 43.32000 N ! (deg min) LONGITUDE : 134 3.00000 W ! (deg min) WATER DEPTH : 68 *DEPLOYMENT MISSION : n/a TYPE : Spar Buoy | custom item *INSTRUMENT TYPE : Neil Brown Current Meter MODEL : ACM2 SERIAL NUMBER : 1115 DEPTH : 5 $TABLE: SENSORS ! Name Abs Depth Serial No ! ------------- -------------- ---------- Temperature 5 ' ' Compass 5 ' ' Speed 5 ' ' $END $REMARKS Instrument depth in metres. $END *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! ----------------------- ------ ---------- -------- --------- --------- CLEAN 1.1 1996/01/08 15:50:39 30 30 CHANGE_CM_CHANNEL_NAMES 1.0 2013/12/12 11:42:37 30 30 CHANGE_HEADER_INFO 1.0 2014/03/13 13:41:41 30 30 $END $REMARKS -The following CLEAN parameters were used. Reset #RECS, MIN & MAX values in header. $END *COMMENTS The 1980-1985 Canmar current meter data were extracted from GF3 tape #ASLGF3183001 written by R. Birch of Arctic Sciences Ltd. These current meter data have been edited, checked and processed, under a contract to COGLA (Birch, 1988. Current meter and wind data collected at CANMAR drillships 1980-1986. By Arctic Sciences Ltd., Sidney, B.C., 287 p.). The following documentation was extracted from the GF3 tape. 00 *** CURRENT METER METHODS - 1981 *** 289 0 290 0 CURRENTS AT 12M DEPTH WERE MEASURED (AS IN 1980), USING HYDROPRODUCT 291 0 METERS, HOWEVER THESE DATA ARE NO LONGER AVAILABLE FROM EITHER CANMAR OR 292 0 GOVERNMENT AGENCIES. THE FILES DO NOT EXIST ON THE EDAM SYSTEM, AND NO 293 0 HARD COPY REPORTS WERE EVER PRODUCED. THESE DATA WERE OF RELATIVELY LOW 294 0 QUALITY (MACLAREN PLANSEARCH, 1982) AND INSTRUMENT DOWNTIME GREATLY 295 0 REDUCED THE AMOUNT OF DATA COLLECTED, SO THEIR LOSS MAY NOT BE ALL THAT 296 0 SIGNIFICANT. 297 0 298 0 BEGINNING IN 1981, INTERNALLY-RECORDING CURRENT METERS WERE MOORED AWAY 299 0 FROM THE DRILLSHIP. THEY WERE PLACED FAR ENOUGH AWAY SO THAT THE SHIP 300 0 WOULD NOT AFFECT EITHER THE INTERNAL MAGNETIC COMPASS OR THE CURRENT 301 0 PATTERN. TWO DIFFERENT MOORING SYSTEMS WERE USED: SPAR BUOYS, AND SUB- 302 0 SURFACE MOORINGS. 303 0 304 0 ICE RESISTANT SPAR BUOYS, CONSTRUCTED BY SEAKEM OCEANOGRAPHY (SIDNEY, 305 0 B.C.), WERE USED TO MONITOR NEAR-SURFACE CURRENTS. NEIL BROWN ACOUSTIC 306 0 CURRENT METERS, LOCATED AT 5M DEPTH, RECORDED INTERNALLY AND ALSO 307 0 TRANSMITTED IN REAL TIME USING VHF RADIO SIGNALS TO THE DRILLING VESSEL. 308 0 THREE OF THE FOUR TELEMETRY SYSTEMS NEAR THE KENALOOAK SITE FAILED IN 309 0 1981, HOWEVER DATA WERE RECOVERED FROM THE INTERNAL STORAGE DEVICE. IN 310 0 1982, DAMPER PLATES WERE INTRODUCED TO FURTHER STABILIZE THE BUOYS. OFTEN 311 0 AANDERAA RCM4 OR APPLIED MICROSYSTEMS RCM12 CURRENT METERS WERE ALSO 312 0 SUSPENDED BENEATH THE SPAR BUOYS AT 25M DEPTH. NO SUCH DATA WERE 313 0 RECOVERED IN 1981. 314 0 315 0 ONE CURRENT METER RECORD WAS OBTAINED NEAR THE KENALOOAK SITE USING A 316 0 SUB-SURFACE MOORING. THE INSTRUMENT WAS PART OF A TAUT LINE MOORING, 317 0 ANCHORED TO BOTTOM, AND HAVING SUBSURFACE FLOTATION. LITTLE ELSE IS 318 0 KNOWN OF THE DETAILS OF THE MOORING DESIGN. THE DATA FROM 25M, OBTAINED 319 0 WITH AN ANDERAA RCM4 METER, IS SUSPECT. THE DIRECTION VALUES ARE ERRATIC 320 0 AND OF NO VALUE; THE SPEED DATA ARE ALSO SUSPECT AS THEY ARE ABNORMALLY 321 0 UNIFORM WITH NO EVIDENCE OF SEMI-DIURNAL FLUCTUATIONS, EXPECTED FROM 322 0 TIDAL OR INERTIAL OSCILLATIONS (FISSEL, 1981). 323 !--1--- ---2--- --3--- !Speed Directi Temper ! on: ature ! Geog( ! to) !------ ------- ------ *END OF HEADER 0.206 223.90 1.05 0.249 227.80 1.05 0.289 233.80 0.85 0.206 263.20 0.80 0.151 274.50 0.90 0.090 284.00 0.85 0.060 291.50 0.75 0.059 288.70 0.85 0.052 308.30 0.90 0.082 199.40 0.90 0.132 207.70 0.90 0.206 219.80 0.90 0.179 228.80 0.90 0.192 238.70 0.83 0.177 227.40 0.83 0.180 214.70 0.75 0.198 217.50 0.75 0.132 222.10 0.75 0.089 212.90 0.70 0.137 194.60 0.75 0.163 216.10 0.70 0.168 232.30 0.75 0.209 219.30 0.75 0.234 226.30 0.75 0.228 229.60 0.75 0.210 235.60 0.75 0.176 241.90 0.75 0.130 244.10 0.80 0.122 266.90 0.90 0.129 257.80 0.90